[Eeglablist] Reading Neuroscan locations file
Yannis Paloyelis
y.paloyelis at gmail.com
Wed May 9 09:26:02 PDT 2012
Dear List,
First, one quick question: Is there a way to search the EEGLAB list with
key terms? At the moment I can only see how to browse complete past
archives.
Second, the longer question: I use a Neuroscan quik-cap 64-channel with
synamps-1, with 8 additional electrodes (total 72) and I am having problems
reading channel locations.
>From the neuroscan software I can save the .asc file with channel
positions that I provide at the end of this email (see at the bottom of the
email). However, when I try to read it using the GUI Edit channel Info>Read
Locations, I get the error I also provide below.
Question 1: Is there a way I can read this location file?
Question 2: If not, for 62 of the standard cap electrodes I could get the
standard locations. For some of the additional electrodes (numbers 31-32,
65-72), I suppose if I change their names to standard names, their
locations could be read from a standard file? I suppose 32 and 69-71 must
have standard locations/names; 65-68 are attached at the internal and the
external canthus of each eye to obtain horizontal ocular movements)
Question 3: Two electrodes (31 (the third bipolar cap electrode) and 72 are
left free to record power line noise). As these electrodes do not have a
standard location (they are attached over the central/frontal part of the
cap) and are not useful for standard purposes I will just remove them
(unless someone suggests it would be useful to include them in ICA even
though they do not have a fixed location?)
Many thanks for any help you could provide!
Best wishes,
Yannis
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% The error message when trying to read the locations file (see below for
the locations file)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
IMPORTANT: After importing/modifying data channels, you must close
the channel editing window for the changes to take effect in EEGLAB.
TIP: Call this function directy from the prompt, ">> pop_chanedit([]);"
to convert between channel location file formats
readlocs(): 'asc' format assumed from file extension
Reading file (lines): 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
160 170 180 190 200 210 220 224
??? Error using ==> readlocs>load_file_or_array at 624
readlocs(): cannot find the named file or variable, check syntax
Error in ==> readlocs at 405
array = load_file_or_array( filename, g.skiplines);
Error in ==> readneurolocs at 55
chanlocs = readlocs('128.DAT', 'filetype', 'custom', 'format', {
'labels' 'ignore' '-Y' 'X' 'Z' });
Error in ==> readlocs at 361
eloc = readneurolocs( filename );
Error in ==> pop_chanedit at 664
[chans] = readlocs(tmpargs{:});
??? Error using ==> waitfor
Error while evaluating uicontrol Callback
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% The locations file from Neuroscan
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
;SCAN 4.0 ASCII Channel Description File
;
;Line format:
;#<channel number> <label>
;or:
;<display page> <channel number> <pos x0> <pos y0> <pos x1> <pos y1>
;
;A semicolon at the first column indicates a comment.
;
#1 O2
#2 O1
#3 OZ
#4 PZ
#5 P4
#6 CP4
#7 P8
#8 C4
#9 TP8
#10 T8
#11 P7
#12 P3
#13 CP3
#14 CPZ
#15 CZ
#16 FC4
#17 FT8
#18 TP7
#19 C3
#20 FCZ
#21 FZ
#22 F4
#23 F8
#24 T7
#25 FT7
#26 FC3
#27 F3
#28 FP2
#29 F7
#30 FP1
#31 LineNoise
#32 VEOG
#33 PO5
#34 PO3
#35 P1
#36 POZ
#37 P2
#38 PO4
#39 CP2
#40 P6
#41 PO6
#42 CP6
#43 C6
#44 PO8
#45 PO7
#46 P5
#47 CP5
#48 CP1
#49 C1
#50 C2
#51 FC2
#52 FC6
#53 C5
#54 FC1
#55 F2
#56 F6
#57 FC5
#58 F1
#59 AF4
#60 AF8
#61 F5
#62 AF7
#63 AF3
#64 FPZ
#65 HEOGL
#66 HEOGR
#67 HEOG_IL
#68 HEOG_IR
#69 M1
#70 M2
#71 Nose
#72 50Hz
0 1 0.560 0.835 0.614 0.898
0 2 0.401 0.831 0.455 0.893
0 3 0.488 0.828 0.542 0.890
0 4 0.485 0.646 0.539 0.708
0 5 0.607 0.651 0.661 0.713
0 6 0.623 0.568 0.677 0.630
0 7 0.729 0.709 0.783 0.771
0 8 0.629 0.489 0.683 0.551
0 9 0.778 0.611 0.832 0.673
0 10 0.791 0.492 0.845 0.554
0 11 0.246 0.727 0.300 0.789
0 12 0.362 0.659 0.416 0.721
0 13 0.347 0.576 0.401 0.638
0 14 0.485 0.565 0.539 0.627
0 15 0.485 0.487 0.539 0.549
0 16 0.626 0.403 0.680 0.465
0 17 0.786 0.371 0.840 0.433
0 18 0.190 0.625 0.244 0.687
0 19 0.339 0.492 0.393 0.554
0 20 0.482 0.403 0.536 0.465
0 21 0.482 0.313 0.536 0.375
0 22 0.612 0.316 0.666 0.378
0 23 0.737 0.261 0.791 0.323
0 24 0.171 0.501 0.225 0.563
0 25 0.187 0.368 0.241 0.430
0 26 0.341 0.409 0.395 0.471
0 27 0.355 0.316 0.409 0.378
0 28 0.580 0.137 0.634 0.199
0 29 0.227 0.261 0.281 0.323
0 30 0.385 0.137 0.439 0.199
0 31 0.251 0.829 0.305 0.891
0 32 0.227 0.113 0.281 0.175
0 33 0.341 0.766 0.395 0.829
0 34 0.413 0.750 0.467 0.810
0 35 0.416 0.647 0.470 0.709
0 36 0.488 0.730 0.542 0.792
0 37 0.547 0.643 0.601 0.705
0 38 0.562 0.734 0.616 0.797
0 39 0.555 0.565 0.609 0.627
0 40 0.666 0.678 0.720 0.740
0 41 0.625 0.770 0.678 0.832
0 42 0.694 0.582 0.748 0.644
0 43 0.704 0.489 0.758 0.551
0 44 0.643 0.862 0.697 0.923
0 45 0.336 0.859 0.390 0.919
0 46 0.306 0.683 0.360 0.745
0 47 0.274 0.594 0.328 0.656
0 48 0.417 0.568 0.471 0.630
0 49 0.414 0.489 0.468 0.551
0 50 0.555 0.487 0.609 0.549
0 51 0.555 0.406 0.609 0.468
0 52 0.702 0.394 0.756 0.456
0 53 0.263 0.498 0.317 0.560
0 54 0.414 0.409 0.468 0.471
0 55 0.547 0.319 0.601 0.381
0 56 0.675 0.299 0.729 0.361
0 57 0.265 0.397 0.319 0.459
0 58 0.420 0.325 0.474 0.387
0 59 0.577 0.220 0.631 0.282
0 60 0.669 0.177 0.723 0.239
0 61 0.290 0.301 0.344 0.363
0 62 0.295 0.180 0.349 0.242
0 63 0.385 0.232 0.439 0.294
0 64 0.482 0.131 0.536 0.193
0 65 0.165 0.186 0.219 0.248
0 66 0.794 0.171 0.848 0.233
0 67 0.314 0.055 0.368 0.117
0 68 0.656 0.055 0.709 0.117
0 69 0.181 0.706 0.235 0.768
0 70 0.799 0.718 0.853 0.780
0 71 0.482 0.021 0.536 0.083
0 72 0.715 0.825 0.769 0.887
1 1 0.032 0.032 0.161 0.161
1 2 0.194 0.032 0.323 0.161
1 3 0.355 0.032 0.484 0.161
1 4 0.516 0.032 0.645 0.161
1 5 0.677 0.032 0.806 0.161
1 6 0.839 0.032 0.968 0.161
1 7 0.032 0.194 0.161 0.323
1 8 0.194 0.194 0.323 0.323
1 9 0.355 0.194 0.484 0.323
1 11 0.516 0.194 0.645 0.323
1 12 0.677 0.194 0.806 0.323
1 13 0.839 0.194 0.968 0.323
1 14 0.032 0.355 0.161 0.484
1 15 0.194 0.355 0.323 0.484
1 17 0.355 0.355 0.484 0.484
1 18 0.516 0.355 0.645 0.484
1 19 0.677 0.355 0.806 0.484
1 20 0.839 0.355 0.968 0.484
1 21 0.032 0.516 0.161 0.645
1 22 0.194 0.516 0.323 0.645
1 25 0.355 0.516 0.484 0.645
1 27 0.516 0.516 0.645 0.645
1 33 0.677 0.516 0.806 0.645
1 34 0.839 0.516 0.968 0.645
1 35 0.032 0.677 0.161 0.806
1 36 0.194 0.677 0.323 0.806
1 37 0.355 0.677 0.484 0.806
1 38 0.516 0.677 0.645 0.806
1 40 0.677 0.677 0.806 0.806
1 41 0.839 0.677 0.968 0.806
1 44 0.032 0.839 0.161 0.968
1 45 0.194 0.839 0.323 0.968
1 46 0.355 0.839 0.484 0.968
2 9 0.032 0.032 0.161 0.161
2 10 0.194 0.032 0.323 0.161
2 16 0.355 0.032 0.484 0.161
2 23 0.516 0.032 0.645 0.161
2 26 0.677 0.032 0.806 0.161
2 28 0.839 0.032 0.968 0.161
2 30 0.032 0.194 0.161 0.323
2 39 0.194 0.194 0.323 0.323
2 40 0.355 0.194 0.484 0.323
2 42 0.516 0.194 0.645 0.323
2 43 0.677 0.194 0.806 0.323
2 47 0.839 0.194 0.968 0.323
2 48 0.032 0.355 0.161 0.484
2 49 0.194 0.355 0.323 0.484
2 50 0.355 0.355 0.484 0.484
2 51 0.516 0.355 0.645 0.484
2 52 0.677 0.355 0.806 0.484
2 53 0.839 0.355 0.968 0.484
2 54 0.032 0.516 0.161 0.645
2 55 0.194 0.516 0.323 0.645
2 56 0.355 0.516 0.484 0.645
2 57 0.516 0.516 0.645 0.645
2 58 0.677 0.516 0.806 0.645
2 59 0.839 0.516 0.968 0.645
2 60 0.032 0.677 0.161 0.806
2 61 0.194 0.677 0.323 0.806
2 62 0.355 0.677 0.484 0.806
2 63 0.516 0.677 0.645 0.806
2 64 0.677 0.677 0.806 0.806
2 65 0.839 0.677 0.968 0.806
2 66 0.032 0.839 0.161 0.968
2 67 0.194 0.839 0.323 0.968
2 68 0.355 0.839 0.484 0.968
2 69 0.516 0.839 0.645 0.968
2 70 0.677 0.839 0.806 0.968
2 71 0.839 0.839 0.968 0.968
3 31 0.091 0.167 0.455 0.833
3 72 0.545 0.167 0.909 0.833
--
*Yannis Paloyelis, PhD CPsychol*
Department of Neuroimaging
Institute of Psychiatry (Box 089)
King's College London
Denmark Hill
London SE5 8AF
Tel. 020 32283069
Fax 020 32282116
Email: Yannis.Paloyelis at kcl.ac.uk
y.paloyelis at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20120509/8e3680f0/attachment.html>
More information about the eeglablist
mailing list